Common Design Smells and Anti-Patterns
Design smells and anti-patterns are indicators of potential design flaws in software systems. They help identify areas where the design could be improved to enhance readability, maintainability, and overall system quality. Here are some common design smells and anti-patterns:
|
Design Smell/Anti-Pattern |
Description |
|---|---|
|
God Class |
A class that handles too many responsibilities, violating the Single Responsibility Principle and leading to high complexity. |
|
Spaghetti Code |
Unstructured and tangled code that is difficult to understand and maintain, often resulting from poor design and lack of organization. |
|
Feature Envy |
A method that excessively accesses data from another class, indicating a potential design flaw in the distribution of responsibilities. |
|
Circular Dependency |
Modules that depend on each other in a circular manner, making the system difficult to understand, test, and maintain. |
|
Singleton Abuse |
Excessive use of the singleton pattern, leading to tight coupling, reduced testability, and difficulty in managing dependencies. |
|
Shotgun Surgery |
A situation where a single change requires modifications to multiple classes or modules, indicating poor encapsulation and high coupling. |
|
Lazy Class |
A class that doesn’t have enough responsibility or functionality to justify its existence, leading to unnecessary complexity and overhead. |
|
Primitive Obsession |
Overuse of primitive data types instead of creating domain-specific classes, resulting in reduced clarity, maintainability, and extensibility. |
Design Optimization in OOAD
Object-Oriented Analysis and Design (OOAD) is a crucial phase in software development where the system requirements are analyzed and translated into a well-designed object-oriented model. Design optimization in OOAD focuses on improving the quality, performance, maintainability, and scalability of the system design.
Important Topics for Design Optimization in OOAD
- What is Design Optimization?
- Goals of Design Optimization
- Principles of Design Optimization
- Techniques for Design Optimization
- Design Metrics and Analysis
- Common Design Smells and Anti-Patterns
- Best Practices for Design Optimization
- Challenges for Design Optimization
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